The Doctors
Dr Clive Rumberg MBBS BSc


Clive graduated in 1960 and has been a dedicated GP at Knox Medical Centre since 1963. He  has seen many changes in the area in that time.  He is interested in all aspects of General Practice.

Away from the clinic, Clive is a keen squash player, loves cross-country skiing and  hiking.

Dr Kenneth Pyman MBBS FRACGP


Dr Ken Pyman has been a GP at Knox for over 35 years. He enjoys caring for patients of all ages and brings a friendly and diligent manner, believing that a good, trusting patient-doctor relationship helps deliver the best health outcomes. He attends to the full range of problems in general practice, treating children, adults and the elderly. Ken shares his passion for general practice by teaching, mentoring and encouraging the next generation of medical doctors. Outside of medicine, Ken enjoys his family, music and a fulfilling church life and relishes getting out for a good bushwalk or heading to the "G" to cheer on the "Dees" .

Dr Chye Chionh, MBBS


Dr Chionh has been a general practitioner for more than 40 years and is a life member of the RACGP. He has a special interest in respiratory and cardiac patients and aged care. Away from work, he has an interest in gardening and music.

Dr Andrey Butrev MBBS FRACGP


Dr Butrev graduated from medical school in 1996 and spent several years working in the hospital settings overseas and in Australia. He completed General Practice Training in Australia  in 2010 and has been working as a GP in Gippsland where he was involved in a training of junior doctors. He also practices in Frankston. He has a broad range of skills and has specific interest in cosmetic medicine. He speaks English, Greek and Russian Languages.



Since graduation in 2005, Win has had wide range of hospital and general practice experience for more than 10 years. He spent about 3 years working as a hospital doctor in Gippsland (Traralgon) and Monash Health. Then he went into general practice training in Gippsland (Sale, Wonthaggi and Lang Lang). He joined Knox Medical Centre in 2016. In addition to his clinical work, he is regularly involved in academic activities with RACGP , AMC (Australian Medical Council) and AGPT( Australian GP Training). He is a current examiner with RACGP and AMC.

Dr Freya Schmidt MBBS 


Freya Schmidt graduated from the University of Melbourne in 1986. She subsequently completed a Diploma of Obstetrics and Gynaecology in 1989 and then started General Practice Training, completing the Family Medicine program in 1993. She has worked at Knox Medical Centre since the early 1990’s.

She has interests in Women’s health, Preventative care and working with people to make lifestyle changes to maximize their well-being.

Outside work, she enjoys watching her children play sport, travelling, swimming, reading and is currently learning to speak Korean.

Dr Helen Lester MBBS (GP Registrar)

Helen graduated from Newcastle-Upon-Tyne Medical School in the UK, coming to Australia after provisional training and spending most of her time in Emergency Medicine in South East Melbourne with spells in Eastern and Monash Health. Currently starting her training, part-time, in General Practice and working part-time in Emergency at West Gippsland Hospital.

She has 2 children, 3 chickens, 2 rabbits and 1 dog under her care at home and vaguely remembers what it is like to have hobbies!

Dr Jennifer Xu MBBS (GP Registrar)

I am originally from Canberra and have actually lived in Adelaide for the last 10 years. I received my MBBS from Adelaide University in 2018. From there I have completed a few years in the hospital setting and have seen a range of presentations in the disciplines of medicine, surgery, obstetrics, paediatrics and psychiatry. I am excited about exploring Melbourne and to be joining Knox Medical Centre under the guidance of our experienced GPs. In my spare time I enjoy walking, live music and cafe hopping. Would love to hear your suggestions on the new places I need to try on this side of Victoria! All standard visits will be Bulk Billed for Medicare card holders.

The Practice


Knox Medical Centre was established over 50 years ago and has been providing excellent medical care since. We are committed to continue and further improve this service, allocate our time to our patients and their families and look after the local community.